package com.cyq.day17.Demo3;

public class Test {
    public static void main(String[] args) {
        Tip t1=new Topic();
        System.out.println("====主题信息====");
        t1.getInfo();
        Tip t2=new Reply();
        System.out.println("====回复信息====");
        t2.getInfo();
    }
}
